From Team Fortress Wiki
- The Rail Spikes were added to the game.
- In DirectX 8, the spike textures are replaced with fire textures.
- The item's description is a reference to a line spoken by Wheatley in Portal 2: "Had a bit of a brain wave. There I was, smashing some steel plates together, and I thought, 'yes, it's deadly. But what's missing? What's missing?' And I thought lots of sharp bits welded onto the flat bits."